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Eriksson A, Kawde A, Hrachowina L, McKibbin SR, Shi Q, Borgström MT, Wågberg T, Pullerits T, Uhlig J. Synthesis of Well-Ordered Functionalized Silicon Microwires Using Displacement Talbot Lithography for Photocatalysis. ACS OMEGA 2024; 9:20623-20628. [PMID: 38737027 PMCID: PMC11079887 DOI: 10.1021/acsomega.4c03039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Revised: 04/07/2024] [Accepted: 04/09/2024] [Indexed: 05/14/2024]
Abstract
Metal-assisted chemical etching (MACE) is a cheap and scalable method that is commonly used to obtain silicon nano- or microwires but lacks spatial control. Herein, we present a synthesis method for producing vertical and highly periodic silicon microwires, using displacement Talbot lithography before wet etching with MACE. The functionalized periodic silicon microwires show 65% higher PEC performance and 2.3 mA/cm2 higher net photocurrent at 0 V compared to functionalized, randomly distributed microwires obtained by conventional MACE at the same potentials.
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Affiliation(s)
- Axl Eriksson
- Chemical
Physics, Department of Chemistry, Lund University, Kemicentrum Naturvetarevägen
16, Lund 223 62, Sweden
- NanoLund,
Department of Physics, Lund University, Professorsgatan 1, Lund 223 63, Sweden
| | - Anurag Kawde
- Chemical
Physics, Department of Chemistry, Lund University, Kemicentrum Naturvetarevägen
16, Lund 223 62, Sweden
- Lund
Institute of Advanced Neutron and X-ray Science, Lund University, Scheelevägen 19, Lund 223 70, Sweden
- NanoLund,
Department of Physics, Lund University, Professorsgatan 1, Lund 223 63, Sweden
| | - Lukas Hrachowina
- NanoLund,
Department of Physics, Lund University, Professorsgatan 1, Lund 223 63, Sweden
- Solid
State Physics, Department of Physics, Lund
University, Professorsgatan 1, Lund 223 63, Sweden
| | - Sarah R. McKibbin
- NanoLund,
Department of Physics, Lund University, Professorsgatan 1, Lund 223 63, Sweden
- Solid
State Physics, Department of Physics, Lund
University, Professorsgatan 1, Lund 223 63, Sweden
| | - Qi Shi
- Chemical
Physics, Department of Chemistry, Lund University, Kemicentrum Naturvetarevägen
16, Lund 223 62, Sweden
- NanoLund,
Department of Physics, Lund University, Professorsgatan 1, Lund 223 63, Sweden
| | - Magnus T. Borgström
- NanoLund,
Department of Physics, Lund University, Professorsgatan 1, Lund 223 63, Sweden
- Solid
State Physics, Department of Physics, Lund
University, Professorsgatan 1, Lund 223 63, Sweden
| | - Thomas Wågberg
- Department
of Physics, Umeå University, Linnaeus väg 20, Umeå 907 36, Sweden
- Wallenberg
Initiative Materials Science for Sustainability, Department of Physics, Umeå University, Umeå 901 87, Sweden
| | - Tönu Pullerits
- Chemical
Physics, Department of Chemistry, Lund University, Kemicentrum Naturvetarevägen
16, Lund 223 62, Sweden
- NanoLund,
Department of Physics, Lund University, Professorsgatan 1, Lund 223 63, Sweden
| | - Jens Uhlig
- Chemical
Physics, Department of Chemistry, Lund University, Kemicentrum Naturvetarevägen
16, Lund 223 62, Sweden
- Lund
Institute of Advanced Neutron and X-ray Science, Lund University, Scheelevägen 19, Lund 223 70, Sweden
- NanoLund,
Department of Physics, Lund University, Professorsgatan 1, Lund 223 63, Sweden
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Sayed M, Gaber Y, Junghus F, Martín EV, Pyo S, Hatti‐Kaul R. Oxidation of 5-hydroxymethylfurfural with a novel aryl alcohol oxidase from Mycobacterium sp. MS1601. Microb Biotechnol 2022; 15:2176-2190. [PMID: 35349220 PMCID: PMC9328741 DOI: 10.1111/1751-7915.14052] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Revised: 03/06/2022] [Accepted: 03/08/2022] [Indexed: 11/30/2022] Open
Abstract
Bio-based 5-hydroxymethylfurfural (HMF) serves as an important platform for several chemicals, among which 2,5-furan dicarboxylic acid (FDCA) has attracted considerable interest as a monomer for the production of polyethylene furanoate (PEF), a potential alternative for fossil-based polyethylene terephthalate (PET). This study is based on the HMF oxidizing activity shown by Mycobacterium sp. MS 1601 cells and investigation of the enzyme catalysing the oxidation. The Mycobacterium whole cells oxidized the HMF to FDCA (60% yield) and hydroxymethyl furan carboxylic acid (HMFCA). A gene encoding a novel bacterial aryl alcohol oxidase, hereinafter MycspAAO, was identified in the genome and was cloned and expressed in Escherichia coli Bl21 (DE3). The purified MycspAAO displayed activity against several alcohols and aldehydes; 3,5 dimethoxy benzyl alcohol (veratryl alcohol) was the best substrate among those tested followed by HMF. 5-Hydroxymethylfurfural was converted to 5-formyl-2-furoic acid (FFCA) via diformyl furan (DFF) with optimal activity at pH 8 and 30-40°C. FDCA formation was observed during long reaction time with low HMF concentration. Mutagenesis of several amino acids shaping the active site and evaluation of the variants showed Y444F to have around 3-fold higher kcat /Km and ~1.7-fold lower Km with HMF.
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Affiliation(s)
- Mahmoud Sayed
- Division of BiotechnologyDepartment of ChemistryCenter for Chemistry and Chemical EngineeringLund UniversityLundSE‐22100Sweden
- Department of Botany and MicrobiologyFaculty of ScienceSouth Valley UniversityQena83523Egypt
| | - Yasser Gaber
- Department of Microbiology and ImmunologyFaculty of PharmacyBeni‐Suef UniversityBeni‐Suef62511Egypt
- Department of Pharmaceutics and Pharmaceutical TechnologyFaculty of PharmacyMutah UniversityAl‐Karak61710Jordan
| | - Fredrik Junghus
- Division of BiotechnologyDepartment of ChemistryCenter for Chemistry and Chemical EngineeringLund UniversityLundSE‐22100Sweden
| | - Eric Valdés Martín
- Division of BiotechnologyDepartment of ChemistryCenter for Chemistry and Chemical EngineeringLund UniversityLundSE‐22100Sweden
- Present address:
Department of ChemicalBiological and Environmental EngineeringUniversitat Autonoma BarcelonaBellaterraSpain
| | - Sang‐Hyun Pyo
- Division of BiotechnologyDepartment of ChemistryCenter for Chemistry and Chemical EngineeringLund UniversityLundSE‐22100Sweden
| | - Rajni Hatti‐Kaul
- Division of BiotechnologyDepartment of ChemistryCenter for Chemistry and Chemical EngineeringLund UniversityLundSE‐22100Sweden
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